The Engineering of Kicking Horse Pass

All aboard for a wild ride through the Canadian Rockies! The railway lines here are seriously impressive feats of engineering, mainly thanks to Canadian Pacific (CP) and Canadian National (CN). These tracks slice right through the Continental Divide, battling some crazy steep gradients and seriously unstable ground.

We're talking about conquering Kicking Horse Pass (1,627m) and Yellowhead Pass (1,131m), with insane features like the Spiral Tunnels, Stoney Creek Bridge, and the notorious Hell's Gate.

The Kicking Horse Pass is the real MVP. Originally, the "Big Hill" section was a total nightmare with a super-steep gradient that caused constant derailments. Enter the Spiral Tunnels in 1909 – pure genius! These tunnels loop inside Cathedral Mountain and Mt. Ogden, doubling the track length and dropping the gradient to a much more manageable 2.2%.

Then there's the Fraser Canyon, a dramatic gorge carved by the Fraser River. The railway clings to the canyon walls, squeezing through Hell's Gate where the canyon narrows dramatically. Landslides are a real threat here, so constant monitoring is a must.

These rail lines play nice with the region's high-altitude roads, particularly near Lake Louise and Jasper along Highway 93. While the railway hugs the valley floors to maintain that gentle 2.2% gradient, Highway 93 climbs higher to tackle Sunwapta Pass. Both rail and road face the same hazards: avalanches and permafrost issues.

Don't miss the bridges! The Stoney Creek Bridge is a 148-meter long steel arch soaring 91 meters above the creek – one of the highest railway bridges in North America. Near Lytton, the CP and CN tracks pull a cool criss-cross move over the river on two massive bridges.

Finally, the Continental Divide crossings! Yellowhead Pass, used by the Jasper route, is the lowest pass in the Rockies, making for a gentler climb. And keep an eye out for Mount Robson (3,954m), the highest peak in the Canadian Rockies.